linux-kernel - Re: [PATCH] /dev/zero: also implement ->read

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200907073044.GE19875@lst.de>
Date:   Mon, 7 Sep 2020 09:30:44 +0200
From:   Christoph Hellwig <hch@....de>
To:     Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:     Christoph Hellwig <hch@....de>, arnd@...db.de,
        gregkh@...uxfoundation.org, christophe.leroy@...roup.eu,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] /dev/zero: also implement ->read

On Mon, Sep 07, 2020 at 08:50:53AM +0200, Rasmus Villemoes wrote:
> 
> Actually, while you're micro-optimizing it, AFAIK VFS already handles
> count==0,

It doesn't.